中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
6-甲氧基-2-苯基喹啉 | 2-phenyl-6-methoxyquinoline | 4789-73-5 | C16H13NO | 235.285 |
6-羟基-2-苯基-喹啉-4-羧酸 | 6-hydroxy-2-phenyl-quinoline-4-carboxylic acid | 964-30-7 | C16H11NO3 | 265.268 |
6-甲氧基-2-苯基喹啉-4-甲酸 | 6-methoxy-2-phenylquinoline-4-carboxylic acid | 32795-58-7 | C17H13NO3 | 279.295 |
The detoxification of the phytoalexin brassinin to indole-3-carboxaldehyde and S-methyl dithiocarbamate is catalyzed by brassinin oxidase (BOLm), an inducible fungal enzyme produced by the plant pathogen Leptosphaeria maculans. Twenty-six substituted quinolines and isoquinolines are synthesized and evaluated for antifungal activity against L. maculans and inhibition of BOLm. Eleven compounds that inhibit BOLm activity are reported, of which 3-ethyl-6-phenylquinoline displays the highest inhibitory effect. In general, substituted 3-phenylquinolines show significantly higher inhibitory activities than the corresponding 2-phenylquinolines. Overall, these results indicate that the quinoline scaffold is a good lead to design paldoxins (phytoalexin detoxification inhibitors) that inhibit the detoxification of brassinin by L. maculans.